SableCraft Standards

Fixes and additions found by walking every command by hand with two and then three real clients — none of it reachable by the self-test.

Added — /back list, showing what is actually on the teleport trail with distances and the command that made each stop; a reason on /pay, carried into the mailbox when the recipient is offline; a logo.

Changed — trail entries are labelled by the command that made them, taken at the dispatcher, so any mod that teleports a player gets a labelled entry without knowing the mechanism exists. /group disband is now its own command and /group leave refuses to do it.

Fixed — an unedited message now follows the mod on upgrade, where before a wording fix reached only servers that had never run the old version. Group names and tags could carry colour codes into everyone's chat.

Full notes in CHANGELOG.md. Requires NeoForge 21.11.42 on Minecraft 1.21.11.